1998

7.3

2005

5.9

2002

6.2

2007

6.5

1978

7.5

2006

2.0

1985

8.3

1995

7.7

1992

7.0

2008

5.0

2006

6.3

2021

6.8

2006

7.6

2010

4.6

2006

5.5

2013

6.7

2016

6.5

2021

10.0

2003

5.8

2023

7.1